As temperatures rise and homeowners shift into summer mode—running air conditioning, spending time in basements, and closing windows to keep the heat out—there’s a hidden health risk that most people don’t consider: elevated indoor radon levels. Radon, a colorless, odorless radioactive gas, is the second leading cause of lung cancer in the U.S., and its presence can fluctuate significantly between seasons.

At Apex Radon Solutions, we believe summer is one of the most important times to retest your home for radon, and here’s why.

Why Radon Levels Fluctuate in Summer

Radon gas enters your home through foundation cracks, crawlspaces, and gaps in the floor slab. The amount that seeps in is influenced by a number of factors—including indoor/outdoor pressure differentials, air circulation, and ground moisture.

During summer months:

• Air conditioning systems create negative pressure that can draw radon into lower levels of the home.

• Closed windows and doors trap radon gas, preventing natural ventilation.

• Humidity and rainfall can affect soil composition, increasing the likelihood of radon intrusion.

These factors combine to create a unique radon environment in your home—often different from readings taken in colder months.

Who Should Retest for Radon This Summer?

• Homeowners who tested in the winter: Your previous radon test might not reflect current seasonal levels.

• People planning to sell their home: A current radon report helps avoid closing delays.

• Families spending more time indoors, especially in finished basements or lower levels.

• Those living in radon-prone zones, which include many areas throughout Connecticut and New England.

Benefits of Seasonal Radon Testing

1. Peace of Mind: Confirm your home’s safety across different seasonal conditions.

2. Better Real Estate Outcomes: Updated radon results are valuable during transactions.

3. More Accurate Mitigation Planning: Seasonal trends help us recommend the right long-term solutions.

Partner with Apex for Accurate Summer Testing

Our team uses state-of-the-art continuous radon monitors that track your home’s radon levels over 48+ hours, giving you a real-time picture of your exposure risk. If mitigation is necessary, we’ll walk you through next steps with full transparency.

Don’t assume your home is safe just because it tested low in the winter. Radon behaves differently when summer kicks in—and testing now could prevent long-term health risks later.

Call Apex Radon Solutions today to schedule your summer radon retest. Your health starts at home.